import java.util.Arrays;

public class demo1 {
    public static void main(String[] args) {
        int[] arr={2,5,9,7,8};
        bubblesort(arr);
        System.out.println(Arrays.toString(arr));
    }
    public  static void bubblesort(int[]arr){
        for (int i = 0; i < arr.length-1 ; i++) {
            for (int j = 0; j < arr.length-1-i ; j++) {
                if(arr[j]>arr[j+1]){
                    int tmp=arr[j];
                    arr[j]=arr[j+1];
                    arr[j+1]=tmp;
                }

            }

        }
    }
}